Sensitivity of SKA to dark matter induced radio emission

Abstract

Conventionally, one can constrain the dark matter (DM) interaction with DM mass heavier than GeV by searching for DM induced synchrotron emission in the radio frequency band. However, an MeV DM can also generate detectable radio emission if electrons and positrons produced by DM annihilation or decay undergoes inverse Compton scattering (ICS) with the cosmic microwave background. The upcoming radio telescope Square Kilometre Array (SKA) is designed to operate with extremely high sensitivity. We investigate the capability of the SKA to detect DM particles in a board mass range from MeV to TeV, for both annihilation and decay scenarios. In this paper, we consider the sensitivities of the future SKA first and second phase (SKA1 and SKA2). As a comprehensive study, we systematically study the impacts on the DM-induced signal computation from the magnetic field strengths and particle diffusion coefficients. We compare the detection potential of four very different sources: two dwarf spheroidal galaxies (Draco and Segue 1), one radio-poor cluster (A2199), and one DM-rich ultra-diffuse galaxy (Dragonfly 44). We project the SKA1 and SKA2 sensitivities with the exposure of 100 hours on the annihilation cross section and decay time for DM mass from MeV to TeV by considering two different leptonic final states $e^{+}{e}^{-}$ and ${\mu }^{+}{\mu }^{-}$.

arXiv comment24 pages, 6 figures. Replaced to match version accepted for publication in JCAP, the SKA sensitivity updated

References in corpus (47)

• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• Cluster Magnetic Fields
• Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
• Direct Detection of WIMP Dark Matter: Concepts and Status
• The Coma cluster magnetic field from Faraday rotation measures
• Cosmic Rays below Z=30 in a diffusion model: new constraints on propagation parameters
• Search for dark matter annihilations towards the inner Galactic halo from 10 years of observations with H.E.S.S
• A review of indirect searches for particle dark matter
• A Complete Spectroscopic Survey of the Milky Way Satellite Segue 1: The Darkest Galaxy
• Review of LHC Dark Matter Searches
• General Constraints on Dark Matter Decay from the Cosmic Microwave Background
• A High Stellar Velocity Dispersion and ~100 Globular Clusters for the Ultra Diffuse Galaxy Dragonfly 44
• Current status of direct dark matter detection experiments
• Multi-frequency analysis of neutralino dark matter annihilations in the Coma cluster
• Detecting dark matter WIMPs in the Draco dwarf: a multi-wavelength perspective
• Novel cosmic-ray electron and positron constraints on MeV dark matter particles
• Magnetic fields in Local Group dwarf irregulars
• A realistic assessment of the CTA sensitivity to dark matter annihilation
• Anticipated Performance of the Square Kilometre Array -- Phase 1 (SKA1)
• Search for dark matter at colliders
• The intracluster magnetic field power spectrum in A2199
• Status, Challenges and Directions in Indirect Dark Matter Searches
• New Limits on the Dark Matter Lifetime from Dwarf Spheroidal Galaxies using Fermi-LAT
• A Deep Search for Extended Radio Continuum Emission From Dwarf Spheroidal Galaxies: Implications for Particle Dark Matter
• Spatially Resolved Stellar Kinematics of the Ultra-Diffuse Galaxy Dragonfly 44: II. Constraints on Fuzzy Dark Matter
• Dark matter in the Reticulum II dSph: a radio search
• Constraints on Dark Matter Annihilation in Clusters of Galaxies from Diffuse Radio Emission
• Probing Dark Matter with Future CMB Measurements
• An Objective Survey of Mpc-Scale Radio Emission in 0.03<z<0.3 Bright X-ray Clusters
• Local Group dSph radio survey with ATCA (III): Constraints on Particle Dark Matter
• Multiwavelength Analysis of Dark Matter Annihilation and RX-DMFIT
• GMRT observations of the Ophiuchus galaxy cluster
• The Galaxy Cluster Concentration-Mass Scaling Relation
• Polarized synchrotron radiation from the Andromeda Galaxy M31 and background sources at 350 MHz
• Evolution of Dark Matter Halos and their Radio Emissions
• SKA-Phase 1 sensitivity for synchrotron radio emission from multi-TeV Dark Matter candidates
• Constraints on MeV dark matter and primordial black holes: Inverse Compton signals at the SKA
• The Dark Matter Haloes of Chandra X-ray Galaxy Clusters and Baryons Effect
• Constraints on dark matter annihilation in dwarf spheroidal galaxies from low frequency radio observations
• Heavy dark matter particle annihilation in dwarf spheroidal galaxies: radio signals at the SKA telescope
• Revisiting the constraints on annihilating dark matter by radio observational data of M31
• Universal profiles for radio searches of dark matter in dwarf galaxies
• Can SKA--Phase 1 go much beyond the LHC in supersymmetry search?
• Stringent constraint on the radio signal from dark matter annihilation in dwarf spheroidal galaxies using the TGSS
• Gamma-ray and Synchrotron Radiation from Dark Matter annihilations in Ultra-faint Dwarf Galaxies
• Search for decaying heavy dark matter in an effective interaction framework: a comparison of $\gamma$-ray and radio observations
• Hunting dark matter in galaxy clusters with non-thermal electrons

Cited by in corpus (7)

• A general study of decaying scalar dark matter: existing limits and projected radio signals at the SKA
• Constraints on dark matter annihilation from the FAST observation of the Coma Berenices dwarf galaxy
• Searching for relativistic axions in the sky
• A Search for Annihilating Dark Matter in 47 Tucanae and Omega Centauri
• SKA sensitivity for possible radio emission from dark matter in Omega Centauri
• Multi-frequency test of dark matter annihilation into long-lived particles in Sirius
• WIMP Dark Matter Searches in Reticulum II Using MeerKAT